WO2016187306A1 - Système de transmission d'énergie sans fil à multiples étages - Google Patents

Système de transmission d'énergie sans fil à multiples étages Download PDF

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Publication number
WO2016187306A1
WO2016187306A1 PCT/US2016/033086 US2016033086W WO2016187306A1 WO 2016187306 A1 WO2016187306 A1 WO 2016187306A1 US 2016033086 W US2016033086 W US 2016033086W WO 2016187306 A1 WO2016187306 A1 WO 2016187306A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
receiving unit
electronic device
light
personal electronic
Prior art date
Application number
PCT/US2016/033086
Other languages
English (en)
Inventor
Jordin T. Kare
Thomas J. Nugent, Jr.
Original Assignee
Lasermotive, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lasermotive, Inc. filed Critical Lasermotive, Inc.
Priority to US15/574,668 priority Critical patent/US10459114B2/en
Publication of WO2016187306A1 publication Critical patent/WO2016187306A1/fr
Priority to US16/579,676 priority patent/US10859729B2/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
    • G01V8/22—Detecting, e.g. by using light barriers using multiple transmitters or receivers using reflectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/04—Systems determining the presence of a target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/87—Combinations of systems using electromagnetic waves other than radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/003—Transmission of data between radar, sonar or lidar systems and remote stations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/003—Transmission of data between radar, sonar or lidar systems and remote stations
    • G01S7/006—Transmission of data between radar, sonar or lidar systems and remote stations using shared front-end circuitry, e.g. antennas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/483—Details of pulse systems
    • G01S7/484—Transmitters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
    • H01S5/0085—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping for modulating the output, i.e. the laser beam is modulated outside the laser cavity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/062—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes
    • H01S5/06209—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes in single-section lasers
    • H01S5/06216—Pulse modulation or generation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/42—Arrays of surface emitting lasers
    • H01S5/423—Arrays of surface emitting lasers having a vertical cavity
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/30—Circuit arrangements or systems for wireless supply or distribution of electric power using light, e.g. lasers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/1141—One-way transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/806—Arrangements for feeding power
    • H04B10/807—Optical power feeding, i.e. transmitting power using an optical signal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/52—PV systems with concentrators

Definitions

  • the present disclosure generally relates to systems and methods to provide wireless power to personal electronic devices, and more particularly, but not exclusively to, utilizing an intermediate power storage system to receive wireless power from a transmitter, store the received power, and provide the stored power to a personal electronic device.
  • Wireless delivery of power is of utility for many applications, including unmanned aerial vehicles and personal electronic devices, such as laptops and smartphones.
  • Power beaming directs focused electromagnetic or acoustic power, which may be laser light, from a transmitter to a receiver in order to deliver power wirelessly.
  • acoustic power which may be laser light
  • many personal electronic devices that consumers utilize today are not capable of receiving and converting a power beam into electricity for the personal electronic device. It is with respect to these and other considerations that the embodiments described herein have been made.
  • Embodiments are directed towards a multi-stage wireless power transmission system.
  • the system includes a transmitting unit and a receiving unit.
  • the transmitting unit transmits a power beam to the receiving unit.
  • the receiving unit converts the power beam into local electrical power and provides it to a personal electronic device without a corded connection between the receiving unit and a mains power supply.
  • the transmitting unit includes a transmitter to generate and transmit a power beam towards the receiving unit.
  • the transmitting unit may also include a controller to manage the transmission of the power beam. For example, in some cases, the controller will adjust a timing or rate of the transmission of the power beam by the transmitter based on a number of interruptions of the power beam (caused by a safety system determining that an object is impinging the power beam) over a given time period. In other embodiments, the controller will direct transmission of the power beam according to one or more predetermined time slots, a particular scheduling algorithm, or according to some other mechanism.
  • the transmitting unit includes a locator device to determine a location of the receiver relative to the transmitter. The controller aims the transmitter at the receiver based on the determined location of the receiver.
  • the receiving unit includes a receiver to receive at least a portion of the power beam and to convert the received power beam into electrical power that is local to the receiving unit.
  • the receiving unit also includes a power output unit to provide the received local power to a personal electronic device when the personal electronic device (that is separable from the receiving unit) is electrically coupled to the power output unit.
  • the power output unit includes a short-range-wireless-power-transfer device (e.g., an induction-based-power-transfer device) to provide the local power to the personal electronic device without a power cord.
  • the power output unit includes an electrical outlet to receive a power cord electrically coupled to the personal electronic device and to provide the local power to the personal electronic device.
  • the receiving unit may also include a power storage system to store the local power when received by the receiver.
  • the stored local power is later provided to the power output unit to be transferred to the personal electronic device.
  • the local power is provided to the personal electronic device via the power output unit without first being stored by a power storage system
  • a system in a first embodiment, includes a transmitting unit and a non-stationary receiving unit.
  • the transmitting unit includes a light-based transmitter to generate and transmit a power beam, and a controller to manage transmission of the power beam by the light-based transmitter.
  • the non- stationary receiving unit which is remote from the light-based transmitter, includes a light-based receiver to receive at least a portion of the power beam and to convert the received portion of the power beam into local electrical power, wherein the local electrical power is local to the non-stationary receiving unit.
  • the non-stationary receiving unit also includes a power storage system to store the local electrical power and a power output unit to provide the local electrical power from the power storage system to a personal electronic device when the personal electronic device is electrically coupled to the power output unit. The personal electronic device is separable from the non-stationary receiving unit.
  • the power output unit of the non-stationary receiving unit includes a short-range-wireless-power-transfer device to wirelessly provide the local electrical power to the personal electronic device.
  • the short-range-wireless-power-transfer device is arranged to transfer the local electrical power via an inductive coupling to the personal electronic device.
  • the power output unit includes at least one connector arranged to receive a power cord, and the power cord is electrically coupled to the personal electronic device and arranged to provide the local electrical power to the personal electronic device.
  • the non-stationary receiving unit is arranged to receive at least the portion of the power beam from the light-based transmitter in an absence of a corded electrical connection between the receiving unit and a mains power supply.
  • the non- stationary receiving unit is further arranged to provide the local electrical power to the personal electronic device in the absence of the corded electrical connection between the receiving unit and the mains power supply.
  • the controller is arranged to direct the light-based transmitter to transmit the power beam toward a second non- stationary receiving unit.
  • the transmitting unit in some cases of the first embodiment includes a locator device to determine a location of the light-based receiver relative to the light-based transmitter.
  • the controller is arranged to aim the light-based transmitter at the light-based receiver based on the determined location of the receiver.
  • the controller in some cases of the first embodiment is arranged to adjust a timing parameter associated with a transmission of the power beam by the light-based transmitter based on a number of interruptions of the power beam over a given time period.
  • a system in a second embodiment, includes a non-stationary receiving unit that is independent from a connection to a mains power supply and is remote from a light-based transmitter arranged to transmit a power beam to the receiving unit.
  • the non-stationary receiving unit has a substantially planar table surface, a base to support the substantially planar table surface, and a light-based receiver integrated with at least one of the substantially planar table surface and the base.
  • the light-based receiver is arranged to receive at least a portion of the power beam and further arranged to convert the received portion of the power beam into local electrical power that is local to the receiving unit.
  • a power output unit is integrated with the substantially planar table surface to provide the local electrical power to an electronic device when the electronic device is electrically coupled to the power output unit.
  • the power output unit of the non-stationary receiving unit includes a short-range-wireless-power-transfer device to wirelessly provide the local electrical power to the electronic device.
  • the power output unit includes an electrical outlet to provide the local electrical power to the electronic device via a power cord.
  • the non-stationary receiving unit is arranged to receive at least a portion of the power beam from the light-based transmitter in an absence of a corded electrical connection between the receiving unit and the mains power supply.
  • the non- stationary receiving unit is further arranged to provide the local electrical power to the electronic device in the absence of the corded electrical connection between the receiving unit and the mains power supply.
  • the receiving unit includes a power storage system to store the local electrical power received by the light-based receiver, the power storage system is arranged to provide the local electrical power to the power output unit, and the power storage system is integrated with at least one of the substantially planar table surface and the base.
  • a method in a third embodiment, includes transmitting a power beam from a light-based transmitter toward a receiving unit, receiving at least a portion of the power beam at the receiving unit, converting the received portion of the power beam into local electrical power, and providing the local electrical power to a personal electronic device in an absence of a corded connection between the receiving unit and a mains power supply.
  • providing the local electrical power to the personal electronic device may include providing the local electrical power through a short-range-wireless- power-transfer device that transfers the electrical power to the personal electronic device without a power cord.
  • providing the local electrical power to the personal electronic device may include providing the local electrical power through an electrical outlet to the personal electronic device via a power cord.
  • the method of the third embodiment also includes scanning an area surrounding the light-based transmitter to identify the receiving unit, and in response to identifying the receiving unit, determining a location of the receiving unit relative to the light-based transmitter.
  • the method also includes aiming the light-based transmitter at the receiving unit based on the determined location of the receiving unit.
  • the method includes storing the local electrical power in a power supply that is local to the receiving unit prior to providing the local electrical power to the personal electronic device via the power output unit.
  • the method includes detecting one or more objects in a vicinity of the power beam, determining that the one or more objects pose a risk of impeding the transmission of the power beam from the light-based transmitter to the receiving unit, and, in response to the determination of risk, interrupting the transmission of the power beam at least until the one or more objects exit the vicinity of the power beam.
  • the method includes detecting one or more objects in a vicinity of the power beam, determining that the one or more objects pose a risk of impeding the transmission of the power beam from the light-based transmitter to the receiver, and in response to the determination of risk, decreasing an intensity of the power beam at least until the one or more objects exit the vicinity of the power beam.
  • FIG. 1 is an illustrative example of an environment where a multistage wireless power system is utilized to provide wireless electrical power to a personal electronic device;
  • FIG. 2 is a system diagram of a multi-stage wireless power system
  • FIG. 3 is a logical flow diagram generally showing one embodiment of a process for utilizing a multi-stage wireless power system to provide wireless power to a personal electronic device;
  • FIG. 4 is a logical flow diagram generally showing one embodiment of a process for modifying a power beam transmission to provide wireless power to a personal electronic device.
  • NN/NNN,NNN entitled MULTI-LAYERED SAFETY SYSTEM, bearing client number 720173.405; U.S. Pat. Appl. No. NN/NNN,NNN, entitled LIGHT CURTAIN SAFETY SYSTEM, bearing client number 720173.406; U.S. Pat. Appl. No. NN/NNN,NNN, entitled DIFFUSION SAFETY SYSTEM, bearing client number 720173.407; U.S. Pat. Appl. No. NN/NNN,NNN, entitled POWER BEAMING VCSEL ARRANGEMENT, bearing client number 720173.408; U.S. Pat. Appl. No. NN/NNN,NNN, entitled LOCATING POWER RECEIVERS, bearing client number 720173.409.
  • embodiments may be methods, systems, media, or devices. Accordingly, the various embodiments may be entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects.
  • power beam is used, in all its grammatical forms, throughout the present disclosure and claims to refer to a high-flux light transmission that may include a field of light, that may be generally directional, that may be arranged for steering/aiming to a suitable receiver.
  • the power beams discussed in the present disclosure include beams formed by high-flux laser diodes or other like sources including microwave sources, acoustic sources, and other electromagnetic sources sufficient to deliver a desirable level of power to a remote receiver without passing the power over a
  • the term "light,” when used as part of a light-based transmitter or a light-based receiver refers to a transmitter or receiver arranged to produce or capture, as the case may be, electromagnetic radiation that falls within the range defined by the electromagnetic spectrum spanning from extremely low frequencies (ELF) through gamma rays, which includes visible light, ultraviolet light, mid- and short-wavelength infrared light, and other visible and invisible light.
  • ELF extremely low frequencies
  • gamma rays which includes visible light, ultraviolet light, mid- and short-wavelength infrared light, and other visible and invisible light.
  • the transmitter may also include or have an accompanying safety system to determine if an object is interfering with or about to interfere with the power beam.
  • an accompanying safety system to determine if an object is interfering with or about to interfere with the power beam.
  • impinge may be understood to include a physical impact, an obstruction in a line of sight path, an interference with, an encroachment of, and to have an effect upon. Accordingly, physical contact or direct obstruction is not required for one element to impinge on another. Instead, a first element may impinge on a second element if the first element is detected or determined to have an actual or imminent effect on the second element, even if the first element is only near the second element.
  • the flux (W/m 2 ) in an optical high-flux power beam is substantially above the safe limit for exposure to living tissue such as a human or animal eye.
  • the flux is high enough to cause eye damage and/or other non-eye damage such as burns or other changes to living tissue. It is thus important to detect when people, animals, or other objects are in or will imminently enter the high-flux beam path during the time the beam is activated. In these and other cases, it may also be important to deter and/or prevent people, animals, and objects from entering the beam path while the beam is activated or will soon be activated.
  • a laser power beaming system is improved by including a safety system arranged to detect hazards, including objects in or near the high-flux beam path, and to shut off the high-flux power beam or prevent the high-flux power beam from being activated.
  • FIG. 1 is an illustrative example of an environment 100 where a multi-stage wireless power system is utilized to provide wireless electrical power to personal electronic devices.
  • the wireless electrical power may be provided to the personal electronic devices via an untethered power-transfer mechanism such as inductive coupling, magnetic resonance, short-range microwave, or some other technology.
  • the power beam system described herein allows for charging stations, which will be referred to throughout as a multi-stage wireless power system or the receiving unit of the multi-stage wireless power, to operate without being connected to a mains power supply via a power cord.
  • the multi-stage wireless power system described herein can be utilized in restaurants, coffee shops, airports, hotel lobbies, malls, or other locations where people may want to plug-in, charge, or recharge an electronic device while also having the freedom for the charging station to be independent of a power cord connected to the mains power supply.
  • This independence for the charging station permits the proprietor, manager, administrator, or another person to secure or freely move the charging station at will to a location remote from a mains power supply.
  • a "power cord” includes a multi-conductor wire or other electrically conductive conduit such as a line cord that supplies mains power, such as a 1 10 volt alternating current (AC), a 120 volt AC, a 220 volt AC, from a reasonably permanent power supply such as a power grid.
  • a power cord may also include a low voltage cord such as a multi-conductor wire conduit that conforms to a Universal Serial Bus (USB) protocol.
  • USB Universal Serial Bus
  • Other electrically conductive wires, cables, conductors, conduits, leads, and the like are also considered power cords in the present disclosure.
  • the multi-stage wireless power system includes a transmitting unit 10 and a receiving unit 22.
  • the transmitting unit 10 includes a transmitter (not separately illustrated) that generates and transmits a power beam 12 to the receiving unit 22.
  • the receiving unit 22 includes a receiver 14, a power storage system 16, and a power output unit 18.
  • the receiver 14 captures at least a portion of the power beam 12 and converts it into electrical power that is local to the receiving unit 22.
  • the power output unit 18 includes one or more electrical output devices that can transfer or otherwise provide the local power from the receiving unit 22 to a personal electronic device 20.
  • the power output unit 18 includes one or more short-range-wireless-power-transfer devices to transfer the local power to the personal electronic device 20 without a power cord electrically connecting the personal electronic device 20 to the receiving unit 22.
  • the short-range-wireless-power-transfer devices can include induction-based devices (e.g. , using magnetic induction, resonant induction, and other wireless power transfer technologies) or other electric coupling mechanisms that do not require the personal electronic device 20 to be plugged into the receiving unit 22 via a power cord.
  • the power output unit 18 can use charging "pads" that are embedded into a surface of an object.
  • the power output unit 18 includes one or more electrical outlets that are arranged to accept a power cord of the personal electronic device 20, which can transfer the local power from the receiving unit 22 to the personal electronic device 20.
  • FIG. 1 illustrates two short- range-wireless-power-transfer devices as the power output units 18,
  • embodiments are not so limited and other numbers or combinations of wired or wireless power output units 18 may be utilized to transfer the local power from the receiving unit 22 to the personal electronic device 20.
  • the local electrical power is stored in the power storage system 16.
  • the power storage system 16 is a rechargeable battery.
  • FIG. 1 illustrates a single battery, embodiments are not so limited and other numbers of batteries or types of power storage systems may be utilized to store the local power.
  • the power storage system 16 may not be included, rather the local power may be provided from the receiver 14 to the power output unit 18 without being pre-stored.
  • the transmitting unit 10 may include a safety system that interrupts the transmission of the power beam 12 if an object comes within the vicinity of the power beam 12. So without a power storage system 16, the power provided to the personal electronic device 20 may be intermittent if the power beam 12 is interrupted.
  • the receiving unit 22 is embodied in a non-stationary table having a substantially planar table surface and a base to support the substantially planar table surface.
  • the table is non-stationary because it can be moved freely or secured to a wall, floor, or other fixture.
  • Other terms that may be interchangeably used in the present disclosure in place of the term “non- stationary” include “non-fixed,” “mobile,” “movable,” and the like.
  • the table is within a line-of-sight of the transmitting unit 10.
  • the table may be moved to a different location. For example, during daytime business hours, the table may be moved outdoors to a location that services the particular operations of a business, and during evening hours, the table may be moved indoors where its power storage system 16 is recharged.
  • some embodiments may de-activate a power beam during particular time windows, such as during an company's busiest hours.
  • the receiver 14 is a light-based receiver integrated with the table's surface. In other embodiments, however, the receiver 14 may be integrated in the table base or some other portion of the receiving unit 22. Generally speaking, the receiver 14 is arranged such that a line-of-sight transmission path between the receiver 14 and the transmitting unit 10 may be operatively arranged when convenient, necessary, or according to some particular schedule.
  • the transmitting unit 10 includes circuitry or other electronic components (not illustrated) to determine a location of the receiving unit 22.
  • the receiving unit 22 is not connected to a mains power supply via a power cord and may be embedded in or be part of an object that is moveable. The location of the receiving unit 22 relative to the transmitting unit 10 may change if the object that includes the receiving unit 22 is moved. Accordingly, the transmitting unit 10 can determine where the receiving unit 22 (and in particular the receiver 14 of the receiving unit) is relative to the transmitting unit 10 and can aim the transmitter of the
  • the personal electronic device 20 may be virtually any mobile or stationary electronic device that receives power or is charged or recharged from an external power supply. Examples of the personal electronic device 20 may include, but are not limited to, cell phones, smart phones, laptop computers, tablet computers, or other mobile electronic devices. The personal electronic device 20 may also include other electronic devices that are generally not considered mobile, such as, but not limited to, televisions, desktop computers, desk lamps, or other electronic devices. Although FIG. 1 illustrates only a single personal electronic device 20, embodiments are not so limited. In some embodiments, a plurality of personal electronic devices 20 may receive power from the receiving unit 22.
  • FIG. 2 is a system diagram of a power beam system.
  • the power beam system includes a transmitting unit 10 and a receiving unit 22.
  • the transmitting unit 10 includes a processor 34, a memory 28, and a power transmitter 30.
  • the power transmitter 30 generates and transmits the power beam to the receiving unit 22.
  • FIG. 2 illustrates a single power transmitter 30, embodiments are not so limited.
  • the transmitting unit 10 may include a plurality of transmitters 30, with each transmitter 30 being dedicated for a separate receiving unit 22.
  • the transmitting unit 10 may include a single transmitter 30 arranged to power a plurality of receiving units 22.
  • one or more transmitters 30 may be operated with one or more receiving units 22 in any useful arrangement.
  • the memory 28 stores computer-readable instructions that are executed by the processor 34.
  • the memory 28 may also store the location of one or more receiving units 22 after the location is determined by the transmitting unit 10.
  • the power beam may be continuously transmitted to the receiving unit 22 (except for when it is interrupted due to an object), transmitted at predetermined times, transmitted at predetermined intervals, or transmitted on-demand when requested by the receiving unit 22. Accordingly, the memory 28 may store the timing and rate schedule for transmitting the power beam to each
  • the receiving unit 22 includes a power receiver 14, a power storage system 24, and a power output unit 18.
  • the power receiver 14 includes at least one receiver to receive at least a portion of the power beam from the power transmitter 30 and convert it into electrical power that is local to the receiving unit 22. In some embodiments, there may be multiple power beams transmitting to the receiver 14 or there may be multiple receivers 14 arranged to receive power beams provided from multiple transmitters 30.
  • the power storage system 24 includes a battery or other electrical storage technology that can be charged by the electrical power received by the power receiver 14 and supply that stored power to the power output unit 18. As described elsewhere herein, the power output unit 18 includes one or more electrical output devices that can transfer or otherwise provide the local power from the receiving unit 22 to a personal electronic device 20.
  • the receiving unit 22 may also include a processor, memory, or other circuitry (not illustrated) to perform other actions.
  • the receiving unit 22 may monitor a charge or capacity level of the power storage system 24. When the capacity level falls below or otherwise crosses a predetermined threshold, then the receiving unit 22 transmits a signal to the transmitting unit 10 requesting or otherwise instructing the transmitting unit 10 to initialize transmission of the power beam to the receiver 14. Once the capacity level is crosses another threshold value, then the receiving unit 22 transmits another signal to the transmitting unit 10 instructing the transmitting unit 10 to halt the transmission of the power beam. In some embodiments, the transmitting unit 10 may wait idle unit it receives an instruction from the receiving unit 22 or it may transmit the power beam to another receiving unit 22.
  • FIG. 2 illustrates a single receiving unit 22, embodiments are not so limited.
  • a plurality of receiving units 22 may be charged by one or more transmitting units 10.
  • the transmitting unit 10 may transmit the power beam to one receiving unit 22 before transmitting the power beam to a different receiving unit 22.
  • the transmitting unit may systematically transmit the power beam to each of a plurality of receiving units 22 in a predetermined order for a predetermined amount of time or until the power storage system 24 of the corresponding receiving unit 22 is sufficiently charged.
  • the transmitting unit 10 may transmit the power beam to a receiving unit 22 that is being utilized by a highest number of personal electronic devices 20 or the receiving unit 22 that is outputting the most power to the personal electronic device 20.
  • processes 300 and 400 described in conjunction with FIGS. 3 and 4, respectively, may be implemented by or executed on one or more computing devices, such as transmitting unit 10, receiving unit 22, or other power beam systems.
  • FIG. 3 is a logical flow diagram generally showing one embodiment of a process for utilizing a multi-stage wireless power system to provide wireless power to a personal electronic device.
  • Process 300 begins after a start block.
  • a receiver(s) 14 of a receiving unit(s) 22 is identified and located by a transmitting unit 10.
  • the transmitting unit 10 includes a proximity detector that is arranged to locate the receiver 14 of a receiving unit 22.
  • Various different types of location detection technology known to those skilled in the art can be utilizes, including, but not limited to, cameras, radio frequency triangulation, or other devices that can be used to locate another object (i.e. , a receiver).
  • the transmitter 30 is aimed towards the receiver 14 so that the power beam is transmitted towards the receiver 14.
  • the receiving unit 22 may be stationary or non-stationary. Accordingly, the location of the receiving unit 22 (i.e. , the receiver 14) may be monitored to determine if the receiving unit 22 has moved in a way that would require an adjustment to the aim of the power beam. This monitoring may occur periodically (e.g. , once a minute) or it may be based on a sensor output (e.g. , a rangefinder outputs a different distance between the transmitter 30 and the receiver 14). In yet other embodiments, the location of the receiver 14 may be provided by an administrator (e.g. , by entering the coordinates of the receiver 14 relative to the transmitter 30) or the transmitter 30 may be manually aimed by the administrator.
  • an administrator e.g. , by entering the coordinates of the receiver 14 relative to the transmitter 30
  • the transmitter 30 may be manually aimed by the administrator.
  • Process 300 proceeds to block 304, where a power beam is generated and transmitted from the transmitter 30 to the receiver 14.
  • the power beam includes beams formed by high-flux laser diodes or other like sources sufficient to deliver a desirable level of power to the receiver 14 without passing the power over a conventional electrical conduit, such as wire.
  • the transmitter 30 in the transmitting unit 10 may alternate transmitting the power beam between each receiving unit 22 as described elsewhere herein.
  • the transmitting unit 10 may include a separate transmitter 30 for each separate receiver 14 or receiving unit 22.
  • Process 300 continues at block 306, where the received flux from received power beam is converted into electrical power.
  • electrical power Various techniques known to those skilled in the art may be employed to capture and convert the power beam into electrical power. In various embodiments, this electrical power is referred to as local electrical power because it is utilized by a receiving unit to provide power to a personal electronic device without being
  • Process 300 proceeds next to block 308, where the local power is stored in a power storage system 24.
  • the local power is stored in a battery.
  • block 308 may be optional and may not be performed, rather the local power may be provided directly to a personal electronic device 20 without first being stored.
  • Process 300 continues next at block 310, where the local power is provided to an electronic device (e.g., personal electronic device 20) via a power output unit 18.
  • receiving unit 22 includes a power output unit 18 that may include a short-range-wireless-power transfer device or an electrical outlet, or both.
  • a personal electronic device 20 is electrically coupled to the power output unit 18, such as via a charging "pad" for wireless power transfer or a power cord, the local power is transferred to the personal electronic device 20.
  • process 300 optionally terminates. In other cases, processing may controllably, conditionally, or automatically return back to block 302.
  • FIG. 4 is a logical flow diagram generally showing one embodiment of a process for modifying a power beam transmission to provide wireless power to a personal electronic device.
  • Process 400 begins after a start block.
  • one or more sensors are utilized to detect objects that are in the vicinity of the power beam.
  • objects in the vicinity of the power beam may include objects that are near, impeding, or about to impede the power beam.
  • the one or more sensors can include, but are not limited to, light curtains, cameras, rangefinders, infrared sensors, radar sensors, ultrasound sensors, or other object detecting sensors.
  • Process 400 proceeds to decision block 404, where a determination is made whether one or more objects are detected in the vicinity of the power beam.
  • the sensors may provide object- intrusion information about a detected object.
  • object-intrusion information may include, but is not limited to, a "binary" signal that indicates that a sensor has detected an object or other information about the detected object, such as a size of the object; location of the object relative to the power beam; distance from the transmitter or sensor; speed and direction the object is moving; or other information that is used to determine if the object is in fact impeding, near, or about to impede the power beam.
  • process 400 flows to decision block 406; otherwise, process 400 loops to block 402 to continue to utilize and monitor the sensors for objects that are in the vicinity of the power beam. If the power beam transmission was previously modified at blocks 410 or 412 and there is no longer an object in the vicinity of the power beam, then the power beam transmission may return to normal operation.
  • decision block 406 a determination is made whether to modify the power beam transmission. In some embodiments, the system may determine that the detected object will not impede the power beam, such as if the object becomes stationary or is moving in a direction away from the power beam. In this case, the power beam transmission may not be modified or otherwise altered. If the power beam transmission is altered, then process 400 flows to decision block 408; otherwise, process 400 loops to block 402 to continue to utilize and monitor the sensors for objects that are in the vicinity of the power beam.
  • process 400 flows to block 412; otherwise, process 400 flows to block 410.
  • interrupting the power beam transmission may include powering down or halting the power beam, closing a shutter or cap on the transmitter 30 to prohibit the power beam from being projected towards the receiver 14, or otherwise terminating the transmission of the power beam from the transmitter 30.
  • a second transmitter may be instructed to begin transmitting a second power beam at the receiver 14.
  • the second transmitter may be positioned in a different location than the first transmitter so that the second power beam arrives at the receiver from a different angle from the first power beam. In this way, if one power beam becomes interrupted, a second power beam, from a different location, can provide wireless power to the receiving unit.
  • process 400 flows to decision block 414.
  • process 400 flows from decision block 408 to block 410.
  • the power beam intensity is reduced.
  • reducing the power beam intensity includes putting the power beam into a safe mode of operation. Although less power may be delivered to the receiver, the reduced power may still be sufficient to power the personal electronic device 20, to slowly recharge the power storage system 24 (e.g., if the personal electronic device 20 is not being charged by the receiving unit 22), or to slow the depletion or discharge of the power storage system (e.g., by supplementing the power provided by the power storage system power when charging the personal electronic device 20).
  • process 400 flows to decision block 414, where a determination is made whether the power beam
  • the power beam may be continuously transmitted to the receiver (except for when it is interrupted due to an object), transmitted at predetermined times, transmitted at predetermined intervals, or transmitted on-demand when requested by the receiving unit.
  • the rate, timing, or scheduling at which the power beam is transmitted to the receiving unit may be modified based on a variety of different factors, including, but not limited to, the number of interruptions over a given period of time, number of electronic devices drawing power from the receiving unit, a capacity level of the power storage system, the power storage system settings or design parameters, or other factors that may impact how often the power beam should be transmitted to the receiving unit. If the power beam transmission timing is to be modified, process 400 flows to block 416; otherwise, process 400 loops to block 402 to continue to utilize and monitor the sensors for objects that are in the vicinity of the power beam
  • the power beam transmission timing is modified.
  • the multi-stage wireless power system described herein may be utilized in a variety of different settings, such as restaurants, coffee shops, airports, hotel lobbies, malls, or other locations where people may want to plug- in, charge, or recharge an electronic device. If the power beam is to be continuously transmitted during business hours, it is possible that the power beam may be repeatedly interrupted due to high traffic volumes of people walking around the system. In this type of situation the power beam may be scheduled to be transmitted at predetermined times, such as during nonbusiness hours or low-traffic hours. In some embodiments, low-traffic hours may be determined based on the number of power beam interruptions per hour or set by an administrator.
  • the power storage system may be designed for continuous charging or for steady interval charging. So in some embodiments, the power beam may be scheduled to be transmitted at predetermined time intervals for a predetermined amount of time. For example, the power beam may be transmitted to the receiving unit every hour for 10 minutes. In various embodiments, this scheduling may be adjusted or otherwise modified based on the number of interrupts of the power beam, properties of the power storage system, or other factors.
  • process 400 returns to block 402 to continue to utilize and monitor the sensors for objects that are in the vicinity of the power beam.
  • controller means any device, system, or part thereof that controls at least one operation, such a device may be implemented in hardware, firmware, or software, or some combination of at least two of the same.
  • the functionality associated with any particular controller may be centralized or distributed, whether locally or remotely.
  • Other definitions of certain words and phrases may be provided within this patent document. Those of ordinary skill in the art will understand that in many, if not most instances, such definitions apply to prior as well as future uses of such defined words and phrases.
  • each described process may represent a module, segment, or portion of software code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some implementations, the functions noted in the process may occur in a different order, may include additional functions, may occur concurrently, and/or may be omitted.
  • the figures in the present disclosure illustrate portions of one or more non-limiting computing device embodiments.
  • the computing devices may include operative hardware found in conventional computing device
  • apparatuses such as one or more processors, volatile and non-volatile memory, serial and parallel input/output (I/O) circuitry compliant with various standards and protocols, wired and/or wireless networking circuitry (e.g. , a
  • communications transceiver one or more user interface (Ul) modules, logic, and other electronic circuitry.
  • Ul user interface
  • a processor refers to one or more processing units individually, shared, or in a group, having one or more processing cores (e.g. , execution units), including central processing units (CPU's), microcontrollers (MCU), digital signal processors (DSP), application specific integrated circuits (ASIC), and the like.
  • the processors interchangeably refer to any type of electronic control circuitry configured to execute programmed software instructions.
  • the programmed instructions may be high-level software instructions, compiled software instructions, assembly-language software instructions, object code, binary code, micro-code, or the like.
  • the programmed instructions may reside in internal or external memory or may be hard-coded as a state machine or set of control signals. According to methods and devices referenced herein, embodiments describe software executable by the processor and operable to execute certain ones of the method acts.
  • a computing device has one or more memories, and each memory comprises any combination of volatile and non-volatile computer-readable media for reading and writing.
  • Volatile computer-readable media includes, for example, random access memory
  • Non-volatile computer-readable media includes, for example, read only memory (ROM), magnetic media such as a hard-disk, an optical disk drive, a floppy diskette, a flash memory device, a CD-ROM, and/or the like.
  • ROM read only memory
  • magnetic media such as a hard-disk, an optical disk drive, a floppy diskette, a flash memory device, a CD-ROM, and/or the like.
  • a particular memory is separated virtually or physically into separate areas, such as a first memory, a second memory, a third memory, etc. In these cases, it is understood that the different divisions of memory may be in different devices or embodied in a single memory.
  • the memory in some cases is a non- transitory computer medium configured to store software instructions arranged to be executed by a processor.
  • the computing devices illustrated herein may further include operative software found in a conventional computing device such as an operating system or task loop, software drivers to direct operations through I/O circuitry, networking circuitry, and other peripheral component circuitry.
  • the computing devices may include operative application software such as network software for communicating with other computing devices, database software for building and maintaining databases, and task management software where appropriate for distributing the communication and/or operational workload amongst various processors.
  • the computing device is a single hardware machine having at least some of the hardware and software listed herein, and in other cases, the computing device is a networked collection of hardware and software machines working together in a server farm to execute the functions of one or more embodiments described herein.
  • each computing device may be transformed from a generic and unspecific computing device to a combination device comprising hardware and software configured for a specific and particular purpose.
  • Database structures may be formed in a single database or multiple databases. In some cases hardware or software storage repositories are shared amongst various functions of the particular system or systems to which they are associated.
  • a database may be formed as part of a local system or local area network. Alternatively, or in addition, a database may be formed remotely, such as within a "cloud" computing system, which would be accessible via a wide area network or some other network.
  • I/O circuitry and user interface (Ul) modules include serial ports, parallel ports, universal serial bus (USB) ports, IEEE 802.1 1 transceivers and other transceivers compliant with protocols administered by one or more standard-setting bodies, displays, projectors, printers, keyboards, computer mice, microphones, micro-electro-mechanical (MEMS) devices such as accelerometers, and the like.
  • MEMS micro-electro-mechanical
  • the memory is a non-transitory computer readable medium (CRM).
  • CRM computer readable medium
  • the CRM is configured to store computing instructions executable by a processor of the power beam system.
  • the computing instructions may be stored individually or as groups of instructions in files.
  • the files may include functions, services, libraries, and the like.
  • the files may include one or more computer programs or may be part of a larger computer program. Alternatively or in addition, each file may include data or other computational support material useful to carry out the computing functions of the power beam system.
  • Buttons, keypads, computer mice, memory cards, serial ports, bio-sensor readers, touch screens, and the like may individually or in
  • the devices may, for example, input control information into the system. Displays, printers, memory cards, LED indicators, temperature sensors, audio devices (e.g., speakers, piezo device, etc.), vibrators, and the like are all useful to present output information to the operator of the power beam system.
  • the input and output devices are directly or electronically coupled to a processor or other operative circuitry. In other cases, the input and output devices pass information via one or more communication ports (e.g., RS-232, RS-485, infrared, USB, etc.)
  • module refers to an application specific integrated circuit (ASIC), an electronic circuit, a processor and a memory operative to execute one or more software or firmware programs, combinational logic circuitry, or other suitable components (i.e. , hardware, software, or hardware and software) that provide the functionality described with respect to the module.
  • ASIC application specific integrated circuit
  • processor and a memory operative to execute one or more software or firmware programs, combinational logic circuitry, or other suitable components (i.e. , hardware, software, or hardware and software) that provide the functionality described with respect to the module.
  • real-time or “real time,” as used interchangeably herein and in the claims that follow, are not intended to imply instantaneous processing, transmission, reception, or otherwise as the case may be. Instead, the terms, “real-time” and “real time” imply that the activity occurs over an acceptably short period of time (e.g. , over a period of microseconds,
  • an activity that is not real-time is one that occurs over an extended period of time (e.g. , hours, days, weeks, months, years, or some other time frame as the context of the term's use implies) or that occurs based on intervention or direction by a person or other activity.

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Abstract

Des modes de réalisation ont trait à un système de transmission d'énergie sans fil à multiples étages qui comprend une unité d'émission et une unité de réception. L'unité d'émission émet un faisceau d'énergie vers l'unité de réception, qui convertit le faisceau d'énergie en une énergie électrique locale et la fournit à un dispositif électronique personnel sans connexion filaire entre l'unité de réception et une alimentation électrique principale. L'unité d'émission comporte un émetteur à base optique pour générer et émettre un faisceau d'énergie vers l'unité de réception. L'unité de réception comporte un récepteur pour recevoir au moins une partie du faisceau d'énergie et convertir le faisceau d'énergie reçu en une énergie électrique locale. L'unité de réception comporte également une unité de livraison d'énergie pour fournir l'énergie locale reçue à un dispositif électronique personnel lorsque le dispositif électronique personnel, qui est séparable de l'unité de réception, est électriquement couplé à l'unité de livraison d'énergie.
PCT/US2016/033086 2015-05-18 2016-05-18 Système de transmission d'énergie sans fil à multiples étages WO2016187306A1 (fr)

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US15/574,668 US10459114B2 (en) 2015-05-18 2016-05-18 Wireless power transmitter and receiver
US16/579,676 US10859729B2 (en) 2015-05-18 2019-09-23 Wireless power transmitter and receiver with cordless operation

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US201562163307P 2015-05-18 2015-05-18
US62/163,307 2015-05-18

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US15/574,668 A-371-Of-International US10459114B2 (en) 2015-05-18 2016-05-18 Wireless power transmitter and receiver
US16/579,676 Continuation US10859729B2 (en) 2015-05-18 2019-09-23 Wireless power transmitter and receiver with cordless operation

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PCT/US2016/033117 WO2016187328A1 (fr) 2015-05-18 2016-05-18 Agencement de laser vcsel à faisceau de puissance
PCT/US2016/033156 WO2016187357A1 (fr) 2015-05-18 2016-05-18 Localisation de récepteurs d'énergie
PCT/US2016/033139 WO2016187344A1 (fr) 2015-05-18 2016-05-18 Système de sécurité multicouche
PCT/US2016/033141 WO2016187345A1 (fr) 2015-05-18 2016-05-18 Système de sécurité à rideau de lumière
PCT/US2016/033120 WO2016187330A1 (fr) 2015-05-18 2016-05-18 Système de sécurité de diffusion
PCT/US2016/033086 WO2016187306A1 (fr) 2015-05-18 2016-05-18 Système de transmission d'énergie sans fil à multiples étages

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PCT/US2016/033156 WO2016187357A1 (fr) 2015-05-18 2016-05-18 Localisation de récepteurs d'énergie
PCT/US2016/033139 WO2016187344A1 (fr) 2015-05-18 2016-05-18 Système de sécurité multicouche
PCT/US2016/033141 WO2016187345A1 (fr) 2015-05-18 2016-05-18 Système de sécurité à rideau de lumière
PCT/US2016/033120 WO2016187330A1 (fr) 2015-05-18 2016-05-18 Système de sécurité de diffusion

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